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Ovules are found within structure _____. (Activity 38A) 
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| A |
| B |
| C |
| D |
| E |
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Which of these is unique to flowering plants? (Activity 38A)
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| a dominant sporophyte generation |
| an embryo surrounded by nutritive tissue |
| haploid gametophytes |
| double fertilization |
| pollen production |
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The male gametophytes of flowering plants are also referred to as _____. (Activity 38A)
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| endosperm |
| male sporophytes |
| megaspores |
| pollen grains |
| embryo sacs |
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In flowering plants the integument of the ovule develops into a(n) _____. (Activity 38A)
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| endosperm |
| cotyledon |
| fruit |
| sporophyte |
| seed coat |
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A carpel is composed of _____. (Activity 38A)
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| ovary, ovule, and anther |
| ovule, megasporocyte, and anther |
| zygote, anther, and endosperm |
| stigma, style, and ovary |
| petal, sepal, and stamen |
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In flowering plants one megaspore gives rise to _____ nuclei. (Activity 38A)
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| four diploid |
| four haploid |
| eight haploid |
| eight diploid |
| microsporangia |
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A stamen consists of _____. (Activity 38A)
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| anther and filament |
| stigma and style |
| stigma and anther |
| stigma and filament |
| ovary and sepal |
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Pollination is the transfer of pollen grain to the _____ of a flower on the same plant or another plant of the same species. (Activity 38A)
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| style |
| anther |
| ovulate cones |
| stigma |
| ovary |
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What is endosperm? (Activity 38B)
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| the male portion of a flowering plant |
| via cotyledons, a source of food for the embryo |
| the leaves that are a part of the embryo |
| the female portion of a flowering plant |
| tissue that develops into a protective seed coat surrounding the embryo |
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The pointer is indicating a diploid cell that develops into the _____. (Activity 38B) 
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| endosperm |
| ovule |
| seed coat |
| carpel |
| embryo |
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Fruits evolved primarily as structures specialized to _____. (Activity 38B)
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| protect seeds |
| disperse seeds |
| protect pollen |
| provide food for humans |
| provide a source of food to the plant's embryo |
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Why is golden rice pale yellow in color? (Activity 38B)
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| It is rich in chlorophyll a. |
| It is nutrient-poor. |
| It is rich in beta-carotene. |
| It is rich in chlorophyll b. |
| It is rich in phycobilins. |
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Which of these is a symptom of vitamin A deficiency? (Activity 38C)
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| osteoporosis |
| impaired taste perception |
| overstimulation of the immune system |
| blindness |
| impaired blood clotting |
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Which of these is a vitamin A precursor? (Activity 38C)
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| cobalamin |
| pyridoxine |
| plasmid |
| beta-carotene |
| thiamin |
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The transfer of antibiotic-resistant genes from genetically engineered bacteria to disease-causing bacteria _____. (Activity 38C)
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| would, if it occurred, be no cause for concern |
| has occurred |
| is likely to occur |
| can never occur |
| seems unlikely |
